How is the equilibrium position of this reaction affected by the following changes? (explain each point)

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?

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